A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.42), Climatix POL909 (AWM module) (All versions < V…

published 2021-11-09 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27544

cvss: 7.4; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits: 0; none known

A vulnerability has been identified in Climatix POL909 (AWB module) (All versions < V11.42), Climatix POL909 (AWM module) (All versions < V11.34). The web server of affected devices transmits data without TLS encryption. This could allow an unauthenticated remote attacker in a man-in-the-middle position to read sensitive data, such as administrator credentials, or modify data in transit.

Patch / fix

fixed in 1

siemens climatix_pol909_firmware 11.34, 11.42

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-315-09 updated 2022-03-10 cvss 6.4

Siemens Climatix POL909 (Update A)

Siemens Climatix POL909 (AWB module) < 11.34 Siemens Climatix POL909 (AWM module) < 11.34
affected: vendor fix cert-portal.siemens.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.4	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD	2.0	5.8	AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected products

Siemens Climatix POL909 (AWB module)
Siemens Climatix POL909 (AWM module)

Classification

Weakness

CWE-311 Missing Encryption of Sensitive Data
CWE-319 Cleartext Transmission of Sensitive Information

References

cert-portal.siemens.com /productcert/pdf/ssa-703715.pdf
vendor-advisory

Sources

CVE List CVE-2021-40366
NVD CVE-2021-40366

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Summary